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Updated 2014-11-07 01:43:59 UTC

M 4.5 — 150 km ESE of Kamaishi, Japan

Magnitude 4.5, depth 35.0 km, 2011-03-11 21:47:40 UTC.

MagnitudeM 4.5
Depth35.0 km
Felt reports—
Statusreviewed
TsunamiNo

Japan → · Kamaishi →

Quake Pulse Activity Index

Activity trend

A high index means recent activity is high relative to the selected historical baseline. It does not mean that a larger earthquake is about to occur.

Quake Pulse Activity Index51/100Normal
Current 30 days42
Historical monthly median41.5
Historical percentileP51
M5+ in 30 days9
M6+ in 30 days1
Activity trendaround the historical range (+1%)
Baseline months: 60Last calculation: 2026-09-03 06:17:39How the index works →
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What to know

A short factual reading of this event from the available observations.

  • Magnitude M 4.5 at 35.0 km depth.
Counts describe detected earthquakes and are not a forecast or hazard assessment.
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Within the Quake Pulse database

Long-term comparisons are more robust at higher magnitudes because small-earthquake detection capability has changed over time.

Magnitude rank in database#145,259
Magnitude rank in country#12,711
M4.5+ within 250 km, ±15 days1,272
Sequence context1008 events →
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Impact and context

Descriptive indicators available for this event and its surroundings.

7/100Limited context
Felt reports—
Max felt intensity (CDI)—
Instrumental intensity (MMI)—
PAGER alertNot available
Tsunami indicator—
USGS significance312
Depth contextShallow
Nearby major city—
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These indicators describe data available after detection. They are neither a forecast nor a direct estimate of damage or individual risk.

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Around this epicenter

Nearby events observed around this epicenter. Spatial proximity does not necessarily mean they belong to the same sequence.

50 km100 km250 km
M 4.5 · 150 km ESE of Kamaishi, Japan · 100 kmInteractive 3D view of earthquakes within 100 km of M 4.5 · 150 km ESE of Kamaishi, Japan.M 4.5 · 150 km ESE of Kamaishi, JapanM 4.7 · 139 km SE of ?funato, Japan · 70.0 kmM 4.6 · 78 km ESE of Kamaishi, Japan · 72.5 kmM 4.7 · 199 km ESE of Kamaishi, Japan · 51.8 kmM 4.6 · 229 km SE of ?funato, Japan · 95.8 kmM 4.6 · 233 km ESE of ?funato, Japan · 98.4 kmM 5.1 · 88 km ESE of Yamada, Japan · 67.4 kmM 4.8 · 222 km ESE of Kamaishi, Japan · 73.3 kmM 4.6 · off the east coast of Honshu, Japan · 73.9 kmM 4.9 · 136 km E of Yamada, Japan · 67.4 kmM 4.6 · 235 km ESE of Kamaishi, Japan · 88.0 kmM 4.6 · 200 km SE of ?funato, Japan · 82.0 kmM 4.7 · 62 km ESE of ?funato, Japan · 92.8 kmM 4.9 · 73 km ESE of Yamada, Japan · 83.6 kmM 4.6 · 131 km ESE of Yamada, Japan · 40.7 kmM 4.5 · 100 km E of Yamada, Japan · 96.4 kmM 4.7 · 194 km ESE of ?funato, Japan · 62.6 kmM 4.8 · 188 km ESE of Ishinomaki, Japan · 89.2 kmM 4.7 · 103 km ESE of Yamada, Japan · 57.2 kmM 4.8 · 191 km ESE of Ishinomaki, Japan · 98.4 kmM 4.6 · 97 km SE of ?funato, Japan · 79.4 kmM 4.7 · 87 km ESE of Yamada, Japan · 74.2 kmM 4.7 · 62 km ESE of Kamaishi, Japan · 88.0 kmM 4.9 · 204 km SE of ?funato, Japan · 86.9 kmM 5.5 · 130 km E of Yamada, Japan · 97.3 kmM 4.5 · 134 km SE of ?funato, Japan · 70.5 kmM 4.6 · 116 km SE of ?funato, Japan · 76.7 kmM 4.5 · 231 km ESE of Kamaishi, Japan · 84.7 kmM 4.7 · 121 km ESE of Kamaishi, Japan · 33.2 kmM 4.5 · 200 km ESE of ?funato, Japan · 64.4 kmM 5.2 · 103 km ESE of Kamaishi, Japan · 48.5 kmM 4.5 · 68 km ESE of ?funato, Japan · 89.4 kmM 5.3 · 55 km SE of Kamaishi, Japan · 97.7 kmM 4.7 · 92 km E of Yamada, Japan · 78.3 kmM 4.6 · 245 km ESE of Kamaishi, Japan · 97.8 kmM 4.7 · 94 km ESE of Kamaishi, Japan · 60.1 kmM 4.8 · 230 km ESE of ?funato, Japan · 94.5 kmM 4.7 · 231 km ESE of Kamaishi, Japan · 83.3 kmM 4.8 · 153 km ESE of Kamaishi, Japan · 18.9 kmM 4.8 · 164 km ESE of Ishinomaki, Japan · 95.1 kmM 4.8 · 203 km SE of ?funato, Japan · 80.3 kmM 4.6 · 219 km SE of ?funato, Japan · 90.3 kmM 4.5 · 209 km SE of ?funato, Japan · 83.1 kmM 5.0 · 203 km SE of ?funato, Japan · 80.5 kmM 4.6 · 215 km SE of ?funato, Japan · 87.3 kmM 5.4 · 202 km SE of ?funato, Japan · 81.5 kmM 4.8 · 207 km E of Yamada, Japan · 88.8 kmM 4.6 · 204 km E of Yamada, Japan · 92.3 kmM 4.7 · 94 km E of Ishinomaki, Japan · 99.0 kmM 4.8 · 143 km ESE of Kamaishi, Japan · 13.1 kmM 4.8 · 62 km SE of ?funato, Japan · 99.5 kmM 5.1 · near the east coast of Honshu, Japan · 56.5 kmM 4.5 · 178 km ESE of ?funato, Japan · 47.1 kmM 4.5 · 165 km E of Yamada, Japan · 83.3 kmM 4.8 · 132 km E of Yamada, Japan · 79.3 kmM 4.6 · 135 km E of Yamada, Japan · 95.0 kmM 4.5 · 139 km ESE of Ishinomaki, Japan · 94.7 kmM 4.5 · 153 km E of Yamada, Japan · 81.3 kmM 4.8 · 78 km ESE of Kamaishi, Japan · 71.7 kmM 4.7 · 130 km ESE of ?funato, Japan · 35.9 kmM 4.8 · 140 km E of Yamada, Japan · 93.1 kmM 4.6 · 65 km ESE of ?tsuchi, Japan · 88.9 kmM 4.5 · 213 km ESE of Kamaishi, Japan · 64.3 kmM 4.6 · 206 km ESE of Kamaishi, Japan · 56.8 kmM 4.6 · 195 km ESE of Ishinomaki, Japan · 97.6 kmM 4.9 · 188 km ESE of Ishinomaki, Japan · 98.5 kmM 4.9 · 114 km ESE of Yamada, Japan · 46.1 kmM 4.8 · near the east coast of Honshu, Japan · 95.3 kmM 4.6 · 72 km ESE of Kamaishi, Japan · 78.2 kmM 4.6 · 211 km ESE of Kamaishi, Japan · 65.2 kmM 4.9 · 195 km ESE of Kamaishi, Japan · 45.0 kmM 4.6 · 87 km ESE of Yamada, Japan · 72.9 kmM 4.6 · 168 km ESE of Ishinomaki, Japan · 79.2 kmM 4.7 · 57 km SE of Kamaishi, Japan · 94.4 kmM 5.4 · 94 km E of Yamada, Japan · 98.7 kmM 4.8 · 218 km ESE of Kamaishi, Japan · 69.1 kmM 4.8 · 108 km ESE of Yamada, Japan · 61.8 kmM 4.9 · 154 km ESE of ?funato, Japan · 45.7 kmM 4.8 · 92 km ESE of Yamada, Japan · 69.1 kmM 4.7 · 177 km SE of ?funato, Japan · 63.1 kmM 4.7 · 206 km ESE of Ishinomaki, Japan · 99.1 kmM 4.8 · 69 km ESE of Kamaishi, Japan · 81.0 kmM 4.6 · 231 km ESE of ?funato, Japan · 90.2 kmM 4.7 · 197 km ESE of Kamaishi, Japan · 48.5 kmM 4.5 · near the east coast of Honshu, Japan · 97.9 kmM 4.9 · 240 km ESE of Kamaishi, Japan · 93.8 kmM 4.9 · 188 km ESE of Kamaishi, Japan · 40.1 kmM 4.8 · 202 km ESE of Kamaishi, Japan · 53.6 kmM 5.2 · 190 km ESE of Kamaishi, Japan · 41.9 kmM 5.3 · 195 km SE of ?funato, Japan · 77.8 kmM 4.5 · 129 km ESE of Ishinomaki, Japan · 84.6 kmM 4.7 · 146 km E of Yamada, Japan · 63.6 kmM 4.8 · 222 km ESE of Yamada, Japan · 79.4 kmM 5.3 · 59 km ESE of Kamaishi, Japan · 91.6 kmM 4.8 · 218 km SE of ?funato, Japan · 96.6 kmM 4.9 · 207 km ESE of Yamada, Japan · 65.7 kmM 4.8 · 203 km ESE of Yamada, Japan · 61.6 kmM 4.7 · 85 km ESE of Yamada, Japan · 75.4 kmM 4.7 · 216 km ESE of Yamada, Japan · 76.7 kmM 4.7 · 141 km ESE of ?funato, Japan · 32.3 kmM 4.6 · 82 km SE of Kamaishi, Japan · 72.6 km
M 4.5 · 150 km ESE of Kamaishi, Japan100 km100 Recent earthquakes

Descriptive map centered on the epicenter; it does not represent felt intensity or risk.

Sequence context

This event belongs to a sequence detected by Quake Pulse.

Open sequence →

Nearby events · 100 km

M 4.7139 km SE of ?funato, Japan70.0 km · 2011-04-09 16:57:27 UTCM 4.678 km ESE of Kamaishi, Japan72.5 km · 2011-04-09 06:29:42 UTCM 4.7199 km ESE of Kamaishi, Japan51.8 km · 2011-04-08 19:13:29 UTCM 4.6229 km SE of ?funato, Japan95.8 km · 2011-04-08 10:04:15 UTCM 4.6233 km ESE of ?funato, Japan98.4 km · 2011-04-08 07:07:39 UTCM 5.188 km ESE of Yamada, Japan67.4 km · 2011-04-07 22:02:19 UTCM 4.8222 km ESE of Kamaishi, Japan73.3 km · 2011-04-07 11:52:33 UTCM 4.6off the east coast of Honshu, Japan73.9 km · 2011-04-07 09:33:16 UTC
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USGS data evolution

Earthquake parameters can be revised after first publication. This timeline shows versions retained by Quake Pulse.

Revisions1
Magnitude change+0.0M 4.5 → M 4.5
Depth change+0.0 km
Last update6271377 min
2014-11-07 01:43:59 UTC2014-11-07 01:43:59 UTC

Explore related context

Related or nearby earthquakes

M 5.6 · 209 km ESE of Ōfunato, Japan69 km · 2026-08-26 19:21:42 UTCM 4.5 · 136 km E of Yamada, Japan77 km · 2026-04-20 16:13:12 UTCM 5.4 · 106 km E of Yamada, Japan78 km · 2026-03-08 13:08:35 UTCM 4.9 · 118 km E of Yamada, Japan79 km · 2026-03-26 19:56:31 UTC

Geographic context

CountryJapan →Nearby cityKamaishi →Seismic sequenceM 4.5 →

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Putting this earthquake in context

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Interpret the numbers

Magnitude, depth, felt reports and status describe different parts of the event. None of them alone predicts the consequences for a specific city.

Important limits

If the earthquake creates a safety concern, follow local authorities and official warning channels rather than relying on a public data website.

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